作者

QQ群：852283276
微信：arm80x86
微信公众号：青儿创客基地
B站：主页 https://space.bilibili.com/208826118

参考

Intel ISDCT, SanDisk SCLI和NVMe-CLI三款SSD工具基本操作简介
nvme-cli常用指令
nvme-cli官网

显示系统内的NVMe SSD

采用list命令，

root@zynqmp:~# nvme list
Node             SN                   Model                                    Namespace Usage                      Format           FW Rev
---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme0n1     S3EVNX0K101880M      Samsung SSD 960 PRO 1TB                  1           4.54  GB /   1.02  TB    512   B +  0 B   2B6QCXP7
/dev/nvme1n1     S3EVNX0K101840H      Samsung SSD 960 PRO 1TB                  1           4.54  GB /   1.02  TB    512   B +  0 B   2B6QCXP7
/dev/nvme2n1     S3EVNX0K101883A      Samsung SSD 960 PRO 1TB                  1           4.54  GB /   1.02  TB    512   B +  0 B   2B6QCXP7
/dev/nvme3n1     S3EVNX0K101887V      Samsung SSD 960 PRO 1TB                  1         377.06  MB /   1.02  TB    512   B +  0 B   2B6QCXP7

读写NVMe

nvme-cli提供接口可直接读写扇区，这里以扇区大小为512，-c指定block个数，从0开始，即0表示一个block。

root@zynqmp:~# nvme write /dev/nvme0n1 -s 0 -c 1 -z 0x400 -d ./start.sh -tlatency: write: 325680 us
write: Success
root@zynqmp:~#
root@zynqmp:~#
root@zynqmp:~# nvme read /dev/nvme0n1 -s 0 -c 1 -z 0x400 -d ./a.bin -tlatency: read: 331882 us
read: Success
root@zynqmp:~# hexdump -C a.bin
00000000  23 21 2f 62 69 6e 2f 73  68 0a 0a 6d 6f 64 70 72  |#!/bin/sh..modpr|
00000010  6f 62 65 20 70 63 69 65  5f 65 70 20 70 63 69 65  |obe pcie_ep pcie|
00000020  5f 65 70 5f 76 69 64 3d  30 78 31 30 62 35 20 70  |_ep_vid=0x10b5 p|
00000030  63 69 65 5f 65 70 5f 64  69 64 3d 30 78 38 37 32  |cie_ep_did=0x872|
00000040  34 0a 6d 6f 64 70 72 6f  62 65 20 6e 76 6d 65 64  |4.modprobe nvmed|
00000050  0a 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000400

在T2080平台上测试，最大操作2MB的读写，否则报错，

root@t2080rdb:~# nvme write /dev/nvme0n1 -s 0 -c 2047 -z 0x100000 -d ./start.sh -tlatency: write: 527 us
write: Success
root@t2080rdb:~#
root@t2080rdb:~#
root@t2080rdb:~# nvme write /dev/nvme0n1 -s 0 -c 4095 -z 0x200000 -d ./start.sh -t     latency: write: 995 us
write: Success
root@t2080rdb:~#
root@t2080rdb:~#
root@t2080rdb:~# nvme write /dev/nvme0n1 -s 0 -c 8191 -z 0x400000 -d ./start.sh -t     latency: write: 2574 us
write:INVALID_FIELD: A reserved coded value or an unsupported value in a defined field(2002)

实际比对数据，发现0x100000长度才能保证读写正确，

root@t2080rdb:~# nvmeqe_benchmark -w /dev/nvme0n1 -s 0x100000 -l 0x100000 -t 1
speed: 200.00MB/s, cost times: 5ms
root@t2080rdb:~#
root@t2080rdb:~# nvmeqe_benchmark -r /dev/nvme0n1 -s 0x100000 -l 0x100000 -t 1
read:
hello nvmeqe_benchmark...
speed: 166.67MB/s, cost times: 6ms

显示磁盘信息

identify命令，

root@zynqmp:~# nvme id-ctrl /dev/nvme0
NVME Identify Controller:
vid       : 0x144d
ssvid     : 0x144d
sn        : S3EVNX0K101880M
mn        : Samsung SSD 960 PRO 1TB
fr        : 2B6QCXP7
rab       : 2
ieee      : 002538
cmic      : 0
mdts      : 9
cntlid    : 2
ver       : 10200
rtd3r     : 186a0
rtd3e     : 4c4b40
oaes      : 0
ctratt    : 0
rrls      : 0
oacs      : 0x7
acl       : 7
aerl      : 3
frmw      : 0x16
lpa       : 0x3
elpe      : 63
npss      : 4
avscc     : 0x1
apsta     : 0x1
wctemp    : 346
cctemp    : 349
mtfa      : 0
hmpre     : 0
hmmin     : 0
tnvmcap   : 1024209543168
unvmcap   : 0
rpmbs     : 0
edstt     : 0
dsto      : 0
fwug      : 0
kas       : 0
hctma     : 0
mntmt     : 0
mxtmt     : 0
sanicap   : 0
hmminds   : 0
hmmaxd    : 0
nsetidmax : 0
anatt     : 0
anacap    : 0
anagrpmax : 0
nanagrpid : 0
sqes      : 0x66
cqes      : 0x44
maxcmd    : 0
nn        : 1
oncs      : 0x1f
fuses     : 0
fna       : 0x5
vwc       : 0x1
awun      : 255
awupf     : 0
nvscc     : 1
nwpc      : 0
acwu      : 0
sgls      : 0
mnan      : 0
subnqn    :
ioccsz    : 0
iorcsz    : 0
icdoff    : 0
ctrattr   : 0
msdbd     : 0
ps    0 : mp:6.90W operational enlat:0 exlat:0 rrt:0 rrl:0rwt:0 rwl:0 idle_power:- active_power:-
ps    1 : mp:5.50W operational enlat:0 exlat:0 rrt:1 rrl:1rwt:1 rwl:1 idle_power:- active_power:-
ps    2 : mp:5.10W operational enlat:0 exlat:0 rrt:2 rrl:2rwt:2 rwl:2 idle_power:- active_power:-
ps    3 : mp:0.0500W non-operational enlat:210 exlat:1200 rrt:3 rrl:3rwt:3 rwl:3 idle_power:- active_power:-
ps    4 : mp:0.0080W non-operational enlat:2000 exlat:6000 rrt:4 rrl:4rwt:4 rwl:4 idle_power:- active_power:-

显示namespace信息

identify命令，

root@zynqmp:~# nvme id-ns /dev/nvme0n1
NVME Identify Namespace 1:
nsze    : 0x773bd2b0
ncap    : 0x773bd2b0
nuse    : 0x873430
nsfeat  : 0
nlbaf   : 0
flbas   : 0
mc      : 0
dpc     : 0
dps     : 0
nmic    : 0
rescap  : 0
fpi     : 0x80
dlfeat  : 0
nawun   : 0
nawupf  : 0
nacwu   : 0
nabsn   : 0
nabo    : 0
nabspf  : 0
noiob   : 0
nvmcap  : 1024209543168
nsattr  : 0
nvmsetid: 0
anagrpid: 0
endgid  : 0
nguid   : 00000000000000000000000000000000
eui64   : 0025385181b14235
lbaf  0 : ms:0   lbads:9  rp:0 (in use)

查看寿命

nvme smart-log /dev/nvme*n1读取smart信息，其中percentage used表示寿命百分比，0表示全新，100表示寿命耗尽。

help

root@zynqmp:~# nvme help
nvme-1.8.1
usage: nvme <command> [<device>] [<args>]The '<device>' may be either an NVMe character device (ex: /dev/nvme0) or an
nvme block device (ex: /dev/nvme0n1).The following are all implemented sub-commands:list                  List all NVMe devices and namespaces on machinelist-subsys           List nvme subsystemsid-ctrl               Send NVMe Identify Controllerid-ns                 Send NVMe Identify Namespace, display structurelist-ns               Send NVMe Identify List, display structurens-descs              Send NVMe Namespace Descriptor List, display structureid-nvmset             Send NVMe Identify NVM Set List, display structurecreate-ns             Creates a namespace with the provided parametersdelete-ns             Deletes a namespace from the controllerattach-ns             Attaches a namespace to requested controller(s)detach-ns             Detaches a namespace from requested controller(s)list-ctrl             Send NVMe Identify Controller List, display structureget-ns-id             Retrieve the namespace ID of opened block deviceget-log               Generic NVMe get log, returns log in raw formattelemetry-log         Retrieve FW Telemetry log write to filefw-log                Retrieve FW Log, show itchanged-ns-list-log   Retrieve Changed Namespace List, show itsmart-log             Retrieve SMART Log, show itana-log               Retrieve ANA Log, show iterror-log             Retrieve Error Log, show iteffects-log           Retrieve Command Effects Log, show itendurance-log         Retrieve Endurance Group Log, show itget-feature           Get feature and show the resulting valuedevice-self-test      Perform the necessary tests to observe the performanceself-test-log         Retrieve the SELF-TEST Log, show itset-feature           Set a feature and show the resulting valueset-property          Set a property and show the resulting valueget-property          Get a property and show the resulting valueformat                Format namespace with new block formatfw-commit             Verify and commit firmware to a specific slot (fw-activate in old version < 1.2)fw-download           Download new firmwareadmin-passthru        Submit an arbitrary admin command, return resultsio-passthru           Submit an arbitrary IO command, return resultssecurity-send         Submit a Security Send command, return resultssecurity-recv         Submit a Security Receive command, return resultsresv-acquire          Submit a Reservation Acquire, return resultsresv-register         Submit a Reservation Register, return resultsresv-release          Submit a Reservation Release, return resultsresv-report           Submit a Reservation Report, return resultsdsm                   Submit a Data Set Management command, return resultsflush                 Submit a Flush command, return resultscompare               Submit a Compare command, return resultsread                  Submit a read command, return resultswrite                 Submit a write command, return resultswrite-zeroes          Submit a write zeroes command, return resultswrite-uncor           Submit a write uncorrectable command, return resultssanitize              Submit a sanitize commandsanitize-log          Retrieve sanitize log, show itreset                 Resets the controllersubsystem-reset       Resets the subsystemns-rescan             Rescans the NVME namespacesshow-regs             Shows the controller registers or properties. Requires character devicediscover              Discover NVMeoF subsystemsconnect-all           Discover and Connect to NVMeoF subsystemsconnect               Connect to NVMeoF subsystemdisconnect            Disconnect from NVMeoF subsystemdisconnect-all        Disconnect from all connected NVMeoF subsystemsgen-hostnqn           Generate NVMeoF host NQNdir-receive           Submit a Directive Receive command, return resultsdir-send              Submit a Directive Send command, return resultsvirt-mgmt             Manage Flexible Resources between Primary and Secondary Controller version               Shows the program versionhelp                  Display this helpSee 'nvme help <command>' for more information on a specific commandThe following are all installed plugin extensions:intel           Intel vendor specific extensionslnvm            LightNVM specific extensionsmemblaze        Memblaze vendor specific extensionswdc             Western Digital vendor specific extensionshuawei          Huawei vendor specific extensionsnetapp          NetApp vendor specific extensionstoshiba         Toshiba NVME pluginmicron          Micron vendor specific extensionsseagate         Seagate vendor specific extensionsSee 'nvme <plugin> help' for more information on a plugin

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nvme-cli使用

作者

参考